Cisco Architectures for 2950/2960 Switches and 2800 Routers

Hello,
I have a question regarding the architectures of these three series, i.e. the type of switch fabric they use and the general architecture (first, second, or third generation regarding the sharing of the bus, memory and the type of switch fabric). We have so far learned these three generation and our assumption is that the only generation being produced now is the third (crossbar) generation, but so far we have to information to back up this claim. We are doing a study on buffer sizing in edge routers/switches so knowing the exact architecture of each model is our priority.
Thank you for reading and thanks in advance for the answers.

Disclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
Exact details on Cisco switch and/or router architecture can be hard to come by, as much of the information, Cisco appears to consider proprietary.
Most switches have some kind of cross bar architecture. Overall bandwidth tends to be higher in later variants (to support higher port densities and/or higher bandwidth ports). Later switch architectures are less likely to block at ports. However, there are often other architecture changes which may improve or worsen performance. For example, 2960 tends to have more fabric bandwidth than the 2950, but the 2960 has different port buffer management (I believe) from the 2950, often resulting in more port drops with bursty traffic.
True routers, like the 2800 series, I believe use a PCI bus, with additional bandwidth restrictions to the modules. They will well support the WAN bandwidths they are recommended for, but they do not well support LAN port bandwidths. Again, specific architecture details can be hard to come by.

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Hi all, can anyone tell me the way most people set up there uplinks between switches, and uplinks to the core, ie do you use uplink fast, backbone fast etc ?
thanks

Yes, we normally use uplink fast for the link from distribution layer to core layer switch; and use backbone fast between core switches.
However, you can use Rapid STP (RSTP) now for all links. Check below for info and examples :
http://www.cisco.com/en/US/products/hw/switches/ps628/products_configuration_guide_chapter09186a00800d84bc.html
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Cisco Jabber for Mac - Directory Lookup and Contact Fields

Hello,
After having issues myself with Cisco Jabber for Mac 9.2 specifically with Active Directory lookups not working, or contact information not populating (and therefore not being able to call users from the contact list as no telephone information exists) I am including a sample jabber-config.xml file that works for me.
Please note: there are many different ways to configure this. What I will be showing is the method that works for me and my deployment, which is pretty standard.
As always and as a disclaimer, once again, this is what has worked for my deployment scenario. Always keep backups of your configuration files, and always be mindful of anything you have configured already, especially in the jabber-config.xml file.
Background
My deployment is based on CUCM 9, with 1 publisher and 2 subscribers. I also have a CUCM IM & Presence 9.0 server. This assumes that you have already configured your deployment and Jabber is functioning already, albeit with the aforementioned issues.
As for Active Directory, my deployment will be based on Windows 2008 R2 Domain Controllers running in native 2008 mode. For this example, we will be searching directly against one of the DCs with a Global Catalogue role. Please be aware that in large deployments you will have to plan accordingly with regards to lookup traffic from Jabber clients to the DCs.
Also, as of Cisco Jabber for Mac 9, the client no longer can search via the CUCM internal directory (which may be made of local end users, Active Directory synced users, or a mix of both) and this must be done via a LDAP mechanism.
Scenario
In this deployment scenario, Cisco Jabber for Windows is working properly - you can search and add people from Active Directory, and contacts in your contact list have all the appropriate fields populated from Active Directory. However, when trying the same with Jabber for Mac, Jabber for iPhone or Jabber for iPad you notice that you cannot perform a directory lookup, and if you add people directly (for example, [email protected]) the user only has the IM field populated. No telephone, email or additional information is displayed.
Solution
Whereas Cisco Jabber for Windows uses the EDI mechanism (native Windows), whereby when running from a computer that is on the domain (or in the event that you are search for contacts in another Active Directory domain where a domain trust exists) , Jabber for Mac / iPhone / iPad uses the BDI mechanism.
In this case, you will need to provision a jabber-config.xml file that you will upload to your TFTP server (or Publisher) that will be "downloaded" by your Jabber for Mac client and also used by the iPhone and iPad client. You can configure many options in the jabber-config.xml file, but for this example we will place just the information that we need to order for these clients to request and display Active Directory information.
Please note that the configuration may vary depending on your deployment, but at the very least we will be:
- Configuring a DC where we will perform the lookup.
- Configure credentials that will be used to perform the lookup. This will be an Active Directory account that has read rights on the Active Directory domain. Please note that these credentials are saved in plain text in the file, so ensure that the account that you will be using is not privileged.
- Configure the server port that we will be using to perform the lookup.
- Configure the Search Base. This is basically where we want the directory lookup to happen. You can either choose for this lookup to start at the "base" of the domain (and therefore the search will iterate through all the user accounts and and OUs below the root base) or define a specific OU where you want to search.
Caution!
- There is a current limitation with Cisco Jabber for Mac whereby you can only have 1 search base configured. Please keep this in mind if, like me, you have multiple OUs (like an OU for each company in your organization) and under these OUs you have sub OUs as a user account container.
- If using the top level search base, unless you specify a filter, you will potentially be able to search for all user accounts in the domain. You will need to configure the <BDIBaseFilter> parameter if you want to fine tune your search ability.
Steps
These are the steps I have followed. Other steps or considerations may vary.
- Log in to your TFTP server and download the jabber-config.xml file and keep it as a backup. If you are already using the jabber-config.xml file for other purposes, do not worry - you can add your BDI information parameters inside.
- Remove the jabber-config.xml file
- Edit the jabber-config.xml file and configure thus:
<?xml version="1.0" encoding="UTF-8"?>
<config version="1.0">
    <Directory>
        <DirectoryServerType>BDI</DirectoryServerType>
        <BDILDAPServerType>AD</BDILDAPServerType>
        <BDIPrimaryServerName>DOMAIN CONTROLLER IP ADDRESS</BDIPrimaryServerName>
        <BDIPresenceDomain>YOUR PRESENCE DOMAIN</BDIPresenceDomain>
        <BDIServerPort1>3268</BDIServerPort1>
        <BDISearchBase1>YOUR SEARCH BASE</BDISearchBase1>
       <BDIConnectionUsername>[email protected]</BDIConnectionUsername>
        <BDIConnectionPassword>PASSWORD</BDIConnectionPassword>
        <BDIEnableTLS>0</BDIEnableTLS>
   </Directory>
</config>
For example, let´s assume the following:
- Domain controller IP address is 10.1.1.2 .
- Your presence domain is test.local .
- Your search base will be test.local using the top level of the domain.
- Your username with which you will be doing your searches is called walt . Usually you can either identify walt as test.local\walt or [email protected] . It is always best, in these sort of scenarios, to use the UPN convention so we will be configuring a [email protected] .
- The password is the Active Directory password for the account walt .
- I have disabled TLS in my case. There are issues with the Jabber for Mac client when using other security methods.
<?xml version="1.0" encoding="UTF-8"?>
<config version="1.0">
    <Directory>
        <DirectoryServerType>BDI</DirectoryServerType>
        <BDILDAPServerType>AD</BDILDAPServerType>
        <BDIPrimaryServerName>10.1.1.2</BDIPrimaryServerName>
        <BDIPresenceDomain>test.local</BDIPresenceDomain>
        <BDIServerPort1>3268</BDIServerPort1>
        <BDISearchBase1>DC=test,DC=local</BDISearchBase1>
       <BDIConnectionUsername>[email protected]</BDIConnectionUsername>
        <BDIConnectionPassword>walt01!</BDIConnectionPassword>
        <BDIEnableTLS>0</BDIEnableTLS>
   </Directory>
</config>
One you have configured the jabber-config.xml file, you will now need to upload it to you TFTP server. Once uploaded, you will need to restart the Cisco TFTP service. Again, my TFTP server is on my CUCM publisher, so:
- I go to Cisco Unified OS Administration on my Publisher server, TFTP File Management and I upload jabber-config.xml to / directory
- I then go to Cisco Unified Serviceability on my Publisher server, I locate the Cisco TFTP service and I restart the service
Once this is done, you can figure up your Jabber for Mac client. As a test, on your Mac (using Terminal) go to:
/Users/username/Library/Application Support/Cisco/Unified Communications/Jabber/Config
In here you will see several files, but what we want to see is jabber-config.xml . As soon as you start the Jabber for Mac client and log in, the jabber-config.xml file will download from your TFTP server and get saved here. When you see it appear, just type in your terminal window more jabber-config.xml and make sure that the output is the same as the xml file you created.
From there, try doing directory search. If you have previously added contacts and they still lack attribute information, you will need to remove them (sometimes it will not refresh properly) and add them again from the directory.
I will be updating this guide and ammending anything that is incorrect, but this is meant to be a quick checklist and steps to get this, at least in the most very basic version, up and running for Jabber for Mac.

Hello,
Thanks for this post! It works, I can do lookup and also I can add found contact to contact list and get information about contact from LDAP.
One more question: - I can't get all information about contact. I don't get e.c mobile phone number and more others attributes. I have tried to expand your file as follows:
<?xml version="1.0" encoding="UTF-8"?>
<config version="1.0">
<Directory>
<DirectoryServerType>BDI</DirectoryServerType>
<BDILDAPServerType>AD</BDILDAPServerType>
<BDIPrimaryServerName>IP of AD</BDIPrimaryServerName>
<BDIPresenceDomain>Presence Domain</BDIPresenceDomain>
<BDIServerPort1>3268</BDIServerPort1>
<BDISearchBase1> Search Base</BDISearchBase1>
<BDIConnectionUsername>User</BDIConnectionUsername>
<BDIConnectionPassword>Password</BDIConnectionPassword>
<BDIEnableTLS>0</BDIEnableTLS>
       <BDISipUri>msRTCSIP-PrimaryUserAddress</BDISipUri>
       <BDIPhotoSource>thumbnailPhoto</BDIPhotoSource>
       <BDIBusinessPhone>telephoneNumber</BDIBusinessPhone>
       <BDIMobilePhone>mobile</BDIMobilePhone>
       <BDIHomePhone>homePhone</BDIHomePhone>
       <BDIOtherPhone>otherTelephone</BDIOtherPhone>
       <BDITitle>title</BDITitle>
       <BDICompanyName>company</BDICompanyName>
<BDILocation>co</BDILocation>
<BDIPostalCode>postalCode</BDIPostalCode>
       <BDICity>l</BDICity>
       <BDIState>st</BDIState>
       <BDIStreetAddress>streetAddress</BDIStreetAddress>
</Directory>
</config>
But it didn't help.
When I capture lookup via Wireshark, I can see that Jabbers sends search request with bunch of attributes, but from LDAP answer contains only 8 attributes. (see attached screenshots)

Cisco Jabber for Windows in Extend and Connect mode and making outbound calls

Hi guys,
I've set up Cisco Jabber for Windows to use Extend and Connect to control a remote PBX endpoint. I've configured the required CTI-RD device, remote destinations, associated the users to the line and added the devices to end-user controlled device. The extend and connect part is working flawlessly without any issues. I'm able to receive inbound calls on the remote PBX endpoint and control the call (hold, resume, transfer etc.) using the Jabber call window that pops up.
However, I'm unable to make any outbound calls via the Jabber client when in extend and Connect mode. Reading the Extend and Connect guide, I need to configure Dial Via Office (DVO) Reverse. So when the user initiates a Dial-Via-Office reverse call, CUCM calls and connect to the Extend and Connect device (CTI-RD). CUCM then calls and connects to the number the user dialled and finally connects the two call legs.
After attempting to configure DVO-R for Jabber for Windows in Extend and Connect mode following the CUCM feature services guide, i'm unable to get any outbound calls working. From RTMT, i am receiving the following Termination Cause Code: (27) Destination out of order. What i also notice is that there is no calling number for that trace either. I would've thought that the calling party would've been the Enterprise Feature Access (EFA) number.
Has anyone got this working or can provide some guidance?
Thanks.

Hi guys,
I've set up Cisco Jabber for Windows to use Extend and Connect to control a remote PBX endpoint. I've configured the required CTI-RD device, remote destinations, associated the users to the line and added the devices to end-user controlled device. The extend and connect part is working flawlessly without any issues. I'm able to receive inbound calls on the remote PBX endpoint and control the call (hold, resume, transfer etc.) using the Jabber call window that pops up.
However, I'm unable to make any outbound calls via the Jabber client when in extend and Connect mode. Reading the Extend and Connect guide, I need to configure Dial Via Office (DVO) Reverse. So when the user initiates a Dial-Via-Office reverse call, CUCM calls and connect to the Extend and Connect device (CTI-RD). CUCM then calls and connects to the number the user dialled and finally connects the two call legs.
After attempting to configure DVO-R for Jabber for Windows in Extend and Connect mode following the CUCM feature services guide, i'm unable to get any outbound calls working. From RTMT, i am receiving the following Termination Cause Code: (27) Destination out of order. What i also notice is that there is no calling number for that trace either. I would've thought that the calling party would've been the Enterprise Feature Access (EFA) number.
Has anyone got this working or can provide some guidance?
Thanks.

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Hi Rollin and Daniel,
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Thank you for rating!

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Hi
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please rate all useful infomration

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WS-C2960X-48TS-L
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Hi,
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Regards,
Paul

Ok, SmartPort macro is now a HIDDEN command, since 12.2(58)SE and later.
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config t
macro name <BLAH>
[ENTER YOUR MACRO HERE]
[Use the "@" to end your macro]
end
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config t
interface <BLAH>
macro apply <MACRO NAME>
end
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sh pars macro name <MACRO NAME>

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SSL3.0 is disabled in A5(3.1b) and A5(3.2) A5(3.1b) was released in late November 2014 and A5(3.2) was released in April 2015
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(test result pages attached)

Dear
the fast Ethernet interface on the switch is meant only for OOB (out of band management) so this way you will not be able to route traffic. It will not communicate to any other subnets apart from the connected subnet. Its better you create a SVI in the switch and use that SVI for management purposes.
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Najeeb

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HI,
We are going to implement Microsoft Lyncs 2013 in our network, so how to priorities the traffic for DSCP 46 and 34 in cisco 2960s switch. Kindly replay with detailed QoS commands for enabling QOs in LAN.
Thanks
Sujish

Hi,
Have a look at this config guide for all the details:
http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960/software/release/12-2_53_se/configuration/guide/2960scg/swqos.html
HTH

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Hi
as i am new to Qos part , please send the complete qos configuration command has to apply in my cisco 2960s switchs as well as 4506 chassis(L3 mode act as my router).
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Hi,there,
The rule setting should be same as in Exchange 2010,you can configure it via outlook or OWA if you have full access permission. I also believe it should be something related to Repliation,would you please check the event log to see if the
AD and Exchange replication has completed.
In some cases, replication can take longer depending on how many AD sites and Exchange servers in the environment:
http://support.microsoft.com/kb/148381
http://support.microsoft.com/kb/158989
Hope these useful!
Regards,
Sharon
Sharon Shen
TechNet Community Support
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Cisco Architectures for 2950/2960 Switches and 2800 Routers

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